Typewriting machine



June 5, 1928.

- E. B. HESS 'IYPEWRITING MACHINE Filed Jan. 25, 1927 2 Sheets-Sheet 1 June 5, 1928.

i-:. s. HESS TYPEWRITING MACHINE Filed Jam. 25, 1927 2 Sheets-Sheet 2 Patented June 5, 1928. I y I UNITED ST AT PATENT oer-tea.-

EDWARD B. HESS, or" ORLANDO, FLORIDA, ASSIGNOR' '10 RQYAL-TYPEWRITER com- VPAN'Y, 11m, OIINEW-YO'RL-N. Y., A CORPORATION or'maw YORK:

'rxrnwm'rme MACHINE.

Application filed January 1927. serial'no. 163,384.

This invention relates to an improved the operative c'onnection between the key type action inm'a'ny'respe'ct's similar to that lever D and the'front'link H. previously employed in the Royal typewrit- The key leverDjhas an'up'xvard extension er. vSucht'yp'e' actions'include a key lever, 1 whichis'inclined slightly toward therear.

5 a type bar and, connections between the key This is provided 'With'tWo ins Q and 3; the

lever and type liar which comprise a front first of which'ov'erlies the ront link'H and linkand intermediate connections between the second of whichunderlies the same link. the frontlink'andty'pe bar; This invention These pins are normally in contact with the relates particularly to the operative conneeupper and lower edges of the front link H.

10 tion'betweena key' lever and the front link. In'order'that the lower pin may remain in In" the drawin sg' Contact with the link during'the actuation of Figuretl isa-view of a single type action the'key and the consequent relative sliding with parts in section showing the lowest movement between the front link and the bank of keys pins 2 and? the lower edge of the front'link 15 FigiireQ is afsimilarv'iew showingga part H has a'curved'or cam portion 4.

ofthetyfpe action as applied to the next By referenceto'Figure5 which" shows in highest bank. a full lines the front link in it'snormalfposi- Figure 3is a View similar to F igure' 2 but tion and in dotted lines the operative p'o'si showing the next'tothetop bank. tion atthe end of the depression of the key 20 Figure 4-is a similar View showing the top lever, it willbe notedthat the upper pin 2 bank v V has moved to the position 2' while the Figure 5 is a detailed- View showing the lower pin3 has moved tov the position 3".

relation between the-front link-'and'pa'rts of There is accordingly a sliding relative movethe connection to' the key" lever in" normal Inent between the frontlink Handthe pins 25 and' aetua'ted position, s 2 and 3 and the curved or cam portion 4; isso Figure 6' 's a view" similar-to Figure'l designed that the. lower'pin' 3 remains in showingthe invention' mbodied in a somecontact therewith at all times. I

what-different form of type action. It may be noted that the front link H and Figure? is a'pe'rspe'ctive on'an enlarged key lever D willmove together at all times 30 scale sh'owinga modifiedformof connection. no matter' whether the'front link is being Figures 8 and 9 are'sectional views with depre'ssed or' is returning to its normal posiparts in elevation showingfurthe'rmodifition. "Instead;ofthelreturning spring K ilations, I lustrated 'in this for n, it is'possible to attach Figure 10 is a side elevationand Figure any desired form of returning spring direct- 35 11a cross sectionof a modification; v to the key" lever. Itisalso to 'benoted Ii1 the'forin of the invention'shown-in that'becanse'ofthe angular'relation ofalinje Figures lto 5 the type action comprises a drawn'through'the pins 2' and 3 with the type 'bar A pivoted in a type segment Band longitudinal axis'of the front link" the upadapted to strike against the front side of a. ward movement of the key lever will be 40 platen'C. ,A key lever D is pivoted on aro'd stopped when the parts reach a certain defi- E and has arearward and downward'exten} nite po'sition'and'the' returning stop M may sion ol'adapted'toactuateja un'iversal'bar'lF. be" omitted 'ifdesired. v v A' fio'ntlin'k His' pivoted at its 'frontend'on Figure 6 discloses the applicationof the a pivot rod I and is extended rearwardly 'inventionto aslightlydifferent form oftyp'e 45 and downwardly and co'nnected'by a'link G action in which the 'typeb'a'rs A" arepivoted to the'lieel ofthe t'y'p'e'bar' A. A returning in'a segment B ,and connectedby linksN springK isfconneeted at oneeiidto the front to a' front'link Hpivoted; on arod'I an'd 'subli nkI-lan'd at its other end to an anchorage sta'ntially the' same as theifron't' link-shown I The'key levers in their return-movement inthefirst form except that it has anup- 50 ma be"limitedby''ai'stop Ml ward extension at'itsjextrerne end insteado'f Thepartsthus'ffar described'are'cominon a downward extension; The key levers D to the form of type action embodied in are pivoted on'a' 'fulcrumirod E and are the Royal portable'machinef The particular connected operativelytothe'link H-exact'ly feature Of the presentinvention relates to @S in'th first ,fOiIn by an upward projeetion 1 provided with pins 2 and 3 engaging the upper and lower edges of the link I-I respectively. The link H is in this case also provided with a rounded portion 4-. It has been found desirable to provide this rounded portion, particularly in the first modification shown, in order that the pin 3 may contact with the link H constantly and prevent any movement of the type bar to the printing point without an accompanying" depression of the key lever far enough to actuate the universal bar. In the present form each link N is connected by a link 0 to a universal frame P and a returning spring R is coiled about the link 0 and has one end attached to a fixed portion S.

In the modification shown in Figure 7, instead of providing the upward extension 1 of each key lever with pins, portions 5 and 6 are struck out of the metal of the ex.- tension 1 and rounded so, that they engage the upper and lower edges of the'link H exactly as do the pins 2 and 3.

In the form shown in Figure 8, pins 7 and 8 are each provided with antifriction rolls 9 which engage the upper and lower edges of the link and facilitate relative movement between the parts.

I In the form shown in Figure 9, pins 7 and 8 are employed but are positioned to engage directly with the edges of the front link H. In both Figures 8 and 9 the pins are provided with heads as illustrated In the form shown in Figures '10 and 11, the front link H is provided with two projecting pins 10 and 11 whichengage on opposite sides of the bent end 12 of the upward extension 1 from the key lever. This bent over end or ear is placed at a proper angle so that it will engage the pins during the pivotal movement of the front link brought about by depression of the key lever. The general action is the same as that of the other modification.

It will be obvious that the invention provides a very simple and efficient means for operatively connecting the key levers to the front links in the general type of type action illustrated.

It is obvious that the present invention maintains all of the'advantages of the previous forms of sliding connection betwecn the type bar and the front link and has other advantages which such other forms lack. Because of the constant engagement of the pins 2 and 3 with the front link H it is possible to place the returning spring for the type action in any desired position as found advisable in different machines. It is obvious that minor variations may be made in the precise embodiment of the invention and that the invention may be applied to widely different forms of type actions in which it is desirable to have a sliding con nection between the key lever and some intermediate element of the action. The invention therefore is to be regarded (lSlllIllilBCl only by the scope of the appended claims.

I claim as my invention:

1. In a type action including a key lover, front link, type bar, and connections between the front link and type bar; means for operatively connecting the key lever and the front link which comprises an extension of the key lever and projections from such extension which have a constant engagement with the upper and lower edges of the front link.

2. In a type action including a key lever, front link, type bar, and connections between the front link and type bar; means for operativelv connecting the key lever and the I front link which comprises an inclined ex} tension of the key level-and projections from such extension which have a constant sliding engagement with the upper andlower edges of the front link.

3. In a type action including a key lever, front link, type bar, and connections between the front link and type bar; means for operatively connecting the key lever and the front link which comprises an extension of the key lever and projections from such extension which have a constant engagement with the upper and lower edges of the front link; and a single spring for returning the entire action to normal position.

4. In a type action including a key lever, front link, type bar, and connections between the front link and type bar; means for operatively connecting the key lever and the front link which comprises an inclined extension of the key lever and projections from such extensionwhich have a constant sliding engagement with the upper and lower edges of the front link; and a single spring for returning. the. entire action to normal po sition.

5. In a type action including a key lever, front link, type bar, and connections'between the front linkand type bar; means for operatively connecting the key lever and the front link which comprises an extension from the key lever inclined upwardlyand rearwa-rdly and projections from such extensional"- ranged in a line at an angle to thevertical and having a constant sliding engagement with the upper and lower edges of the front link.

6. In a type action including a key lever, a substantially horizontal front link pivoted at its front end, type bar, and connections between the front link and the type bar; means for operatively connecting the key lever and the front link which comprises projections on said key lever which constantly engage the upper and lower edges of the front link.

7. In a type action including a key lever, a substantially horizontal front link pivoted at its front end, type bar, and connections I between the front link and the type bar;

means for operatively connecting the key lever and the tront link which comprises lower edges of the front link.

8. In a type action including a key lever,

a substantially horizontal'front link pivoted at its tront'end, type, banandconnections between the front link and the. type bar; means for operative-1y connecting the key lever and the front link wnieh comprises projections on said key lever one of which engages a straight upper edge and the other of which engages a cam portion on the lower edge of the front link. v

9. In a t 3e action lliClLICllR" a ke lever,-

r L1 r a substantially horizontal front link pivoted at its front end, type bar, and connections,

between the front link and thetypebar;

means for operatively connecting the key V lever and the front link which comprises projections on'said key lever arranged'ln a line at van angle to the vertical-and t0 the front link, andhaving constant sliding engagement with theupper and lower edges of the. front link so that the return move-- ment of the key lever islimited by said projections. y

10, .In a type action includingakey lever, a substantially horizontal front link pivoted at its front-end, type bar, and connections between the front link and type bar; means for operatively connecting the key leverv and the front'link which comprises an extension of the key lever and projections from one of said parts which engage opposites'ides of the otherpart. a U m In testimony whereof, I. have hereunto subscribed my name.

' EDWARD B. HESS. 

